Spring-hinge



(No Model.) G. EIFLANDER.

SPRING HINGE.

Patented 1160.29, 1891.

WITN ESSESI QWQM/Ma NITED STATES PATENT Genion.

CHARLES EIFLNDER, OF NEWARK, NEWV JERSEY.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 466,031, dated December 29, 1891.

Application filed September 12, 1891. Serial No.405,474.. (No model.)

To all whom it may concern:

Be it known that I, CHARLES EIFLNDER, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, lhave invented certain new and useful Improvements in Spring-Hinges and I do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in spring-hinges, and more particularly to the novel arrangement and construction of the spring, whereby a greater tension is secured in order to more effectually close the door.

The invention therefore consists in the features and details of construction and combinations of parts hereinafter described, and finally embodied in the claim.

In the accompanyingsheet of drawings, in which similar letters of reference are employed to indicate corresponding parts in each of the several views, Figure l is a plan View of my improved spring-hinge. Fig. 2 is a similar View of the hinge, the spring and the pintle, however, being represented in section to more clearly illustrate the construction and the arrangement of these parts. Fig. 3 is a horizontal section taken on line win Fig. l, and Fig. 4 is a perspective view of a slotted pintle used in connection with my improved form of spring-hinge.

In the drawings, a o represent the hingeleaves provided with any desirable number of screw-holes a for attaching the leaves to a door and its frame. These hinge-leaves may be of any suitable form provided with ears or lugs d2 0,2, rising above the plane of the leaves and adapted to embrace each other in the usual manner. Said lugs are pivo ted together by means of a pintle b, extending from one end of the hinge to the other, said pintle being preferably provided at one end with a collar or flange b and a head b2 for the placing of a wrench thereon. Said pintle is also provided with a longitudinal slot b3, and at the end where it projects through the lower ears of the hinge-leaves there are a number of holes or perforations b4, the purpose of which will be described farther on.

The spring c, employed in connection with the hinge for securing the greatest tension, is of a novel construction. It is made from a continuous piece of springwire, the center portion c of which is doubled at c2 and c3 to form the strands c4 and c5, which are approximately parallel with the portion c', and at the points c6 and c7 of each strand the wire is formed into two oppositely-extending coils 08 and o9, encircling the strands c4 and c5 and the portion c', as will be clearly seen from Fig. 2, the coil cs terminating in an arm or end c10 and the second coil o9 in the arm or end 011.

In order to secure the several parts of my improved hinge together, the pintle b is inserted through the perforated ears at the top of the hinge-leaves and forced down into the lower ears, so that the portion c of the spring c is caused to rest within the slot or groove b3 in the pintle, and the arms or ends 010 and c rest upon the upper surface of one of the hinge-leaves, as shown in the drawings. In order to bring the proper tension upon the spring, the pintle is turned in a direction toward the arms c10 and c by the placing of a wrench on the head b2 of the pintle or by the insertion of a pointed tool or nail in a hole b5 in the top of the pintle, as will be clearly evident. yBy turning the pintle in this manner a pressure is exerted on the part c of the spring, which rests in the longitudinal groove b3, and consequently the coils ca and 09 are tightened.

To prevent the unwinding of the coils of the spring, a pin d is inserted into one of the holes b4 in the lower end of the pintle, and said pin is thus normally forced against a projection or stop o3 on the hinge-leaf opposite to the one against which the free ends of the coils bean/ as will be clearly evident from Fig. 1.

rIhe operation of the device is as follows:

Before the hinge-leaves are secured to a door rated ears a2 and an extra tension is put upon the coils c8 and 09, and when the door or gate is released by the person entering said coils tend to return to their normal inoperative positions and thereby rmly and securely close the door 01 gate. By this construction a neat and cheap spring-hinge for doors, tbc., is the result, which is very simple in construeion,and in which, should the spring become broken, it can readily be replaced by a new spring with comparatively little labor. If the normal tension of the spring is too great and thereby causes the door to close with a slam, a simple turn on the head of the pintle Will enable the removal of the pin d, which can then be inserted into another hole b4 in the end of t-he pintle.

Having thus described my invention, what I claim is- A spring-hinge composed of two leaves and a slotted `or grooved pintle, in combination with a spring made from a continuous piece ot' spring-Wire havinga central portion c fitting into said slotted pintle and bent at c2 and c3 to form strands c4 and c5 approximately parallel with said portion c and provided with oppositely-extending coils cg and cg, encircling said strands c4 and c5, said portion c and said pintle, and said strands terminating in arms or ends C10 and c11 in engagement with the face of one of the hinge-leaves, substantially as and for the purposes set forth.

In testimony that I claim the invention set forth above I have hereunto set my hand this 7th day of September, 1891,

CHARLES EIFLNDER.

WVitnesses:

FREDK. C. FRAENTZEL, EUGEN EIFLNDER. 

